CN115707880A - Pre-embedded locknut - Google Patents

Abstract

The invention provides an embedded locknut embedded in a plastic machine component. The embedded locknut comprises a main body part and a plurality of radiation parts. The main body portion has a threaded hole. The radiating parts are arranged around the periphery of the main body part, each radiating part is provided with a first edge and a second edge which are connected, the first edge and the second edge form a first inner included angle, and the second edge is connected with the first edge of the other adjacent radiating part to form a second inner included angle.

Description

Embedded lock nut

technical field

The invention relates to a pre-embedded anti-loosening nut which is embedded in a plastic mechanical component and is not easy to loosen.

Background technique

Electronic or 3C products usually embed copper or other material nuts in the plastic mechanical parts for later assembly and locking. For example, in notebook computers or tablet computers, nuts are often used.

Generally, for a notebook computer or a tablet computer used by a user, parts such as a battery and a bottom cover are usually assembled from the bottom. The common assembly method is to pre-embed nuts in the plastic casing or plastic parts, and because the nuts are mostly round or hexagonal in shape, after repairing or replacing internal parts many times, the screws used for locking have been used many times. Locking and loosening, the nut will inevitably rotate in the plastic mechanism due to the excessive torque when locking and loosening the screw, which will cause damage to the surrounding plastic and the nut will loosen from the plastic mechanism.

One way is to set tiny teeth around the nut, and through the meshing of the teeth with the plastic mechanism component, the strength of the nut being fixed in the plastic mechanism component is strengthened. However, the tiny teeth around the nut do not provide much resistance to the nut itself. On the contrary, when the nut is subjected to a relatively large locking torque, the teeth that engage with the plastic mechanism will cause more serious damage to the surrounding plastic parts. Not only will the nut itself be damaged and fall off from the plastic mechanism, but it will also be more difficult to repair the plastic mechanism damage to parts or nuts.

Contents of the invention

The invention is directed to a pre-embedded anti-loosening nut which is embedded in a plastic mechanical component and is not easy to loosen.

The pre-embedded locknut embedded in the plastic mechanical component according to the present invention includes a main body part and a plurality of radiation parts. The main body has a threaded hole. The radiating portion is arranged around the periphery of the main body, wherein each radiating portion has a first side and a second side, the first side and the second side form a first inner angle, and the second side forms a first inner angle with another adjacent radiating portion The first sides of are connected to form a second inner angle.

In the embedded locknut according to the embodiment of the present invention, the second side of the radiating part and the first side of another adjacent radiating part are neither parallel nor perpendicular to each other.

In the embedded locknut according to the embodiment of the present invention, the first inner angle is an acute angle, and the second inner angle is an obtuse angle.

In the embedded locknut according to the embodiment of the present invention, the height of each radiating portion is greater than or equal to the diameter of the threaded hole.

In the embedded locknut according to the embodiment of the present invention, a plurality of radiating parts are arranged around the periphery of the main body at equal intervals.

In the embedded locknut according to an embodiment of the present invention, along the thickness direction of the main body, the threaded hole has a first opening on the top surface of the main body, the threaded hole has a second opening on the bottom surface of the main body, and The circle center of the first opening is eccentric to the circle center of the second opening.

The above-mentioned pre-embedded locknut can effectively prevent loosening from the plastic mechanical parts by utilizing its special shape.

Description of drawings

Fig. 1 is the plan view that the pre-embedded locknut of the present invention is buried in the plastic mechanical component;

Figure 2 is a schematic diagram of the pre-embedded locknut.

Explanation of reference signs

1: Plastic Mechanism Components

2: Pre-embedded locknut

21: Main Department

21a: top surface

21b: bottom surface

211: threaded hole

211a: first opening

211b: second opening

22: Ministry of Radiation

221: First side

222: second side

C: connect endpoint

θ1: the first inner angle

θ2: second inner angle

Detailed ways

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and description to refer to the same or like parts.

Fig. 1 is a top view of the embedded locknut of the present invention embedded in a plastic mechanical component. Figure 2 is a schematic diagram of the pre-embedded locknut. Please refer to FIG. 1 and FIG. 2 at the same time. The embedded locknut 2 embedded in the plastic mechanical component 1 includes a main body portion 21 and a plurality of radiation portions 22 . The shape of the main body 21 is arbitrary, and the main body 21 has a threaded hole 211 for locking a locking member (not shown), wherein the locking member can be a screw. The radiation part 22 is arranged around the periphery of the main body part 21, wherein each radiation part 22 connects the first side 221 and the second side 222, the first side 221 and the second side 222 form a first inner angle θ1, the radiation part 22 The second side 222 is connected to the first side 221 of another adjacent radiation portion 22 to form a second inner angle θ2.

The aforementioned radiating portions 22 are arranged at equal intervals around the periphery of the main body portion 21 , wherein the second side 222 of the radiating portion 22 and the first side 221 of another adjacent radiating portion 22 are neither parallel nor perpendicular to each other. In this embodiment, the first inner angle θ1 is an acute angle, and the second inner angle θ2 is an obtuse angle. In addition, the height of each radiating portion 22 may be greater than or equal to the diameter of the threaded hole 211 .

The first side 221 and the second side 222 are hypotenuses, and the slope changes at the connection point C between the second side 222 of the radiating part 22 and the first side 221 of another adjacent radiating part 22 . Therefore, it can be seen from FIG. 1 and FIG. 2 that the connection point C is a turning point between the second side 222 of the radiation part 22 and the first side 221 of another radiation part 22 connected thereto.

By changing the shape of the embedded anti-loosening nut 2, the embedded anti-loosening nut 2 has a radiating part 22 that is similar to a triangle and is arranged radially relative to the main body part 21, wherein the first side 221 of each radiating part 22 is connected to the second side. Both sides 222 can be closely attached to the plastic mechanical component 1 . Therefore, when the pre-embedded locknut 2 is subject to a relatively large torsional impact, the embedded locknut 2 can resist the impact by relying on the contact surface of the radiation part 22 and the plastic mechanism part 1, and it is less likely to cause the embedded locknut 2 to break through the plastic The mechanical component 1 rotates relative to the plastic mechanical component 1 so as to cause damage to the plastic mechanical component 1 .

In addition, the use of the radiating portion 22 which is similar to a triangle also facilitates the gripping of the pre-embedded locknut 2 by the mechanical arm, which is beneficial to the automation process.

Moreover, using the radiating portion 22 that is similar to a triangle also facilitates the assembler to process the radiating portion 22 according to the actual situation in the later stage to form a polygonal radiating portion 22 .

Incidentally, although the shape of the radiating part 22 is not limited to a triangle, it can also be processed and modified into a polygon according to requirements, but special attention must be paid to the fact that the more polygons have sides, the closer the shape of the embedded locknut 2 is to a circle shape, it will lead to the problem that the round nuts in the background art are easy to loosen from the plastic mechanical component 1 due to excessive torque. Therefore, the shape of the radiating part 22 is preferably a triangle.

In addition, along the thickness direction of the main body 21, the threaded hole 211 has a first opening 211a on the top surface 21a of the main body 21, the threaded hole 211 has a second opening 211b on the bottom surface 21b of the main body 21, and the first opening 211a The center of the circle is eccentric to the center of the second opening 211b. That is, the first opening 211a and the second opening 211b are arranged eccentrically, so the locking force on the locking member (screw) can be enhanced when the screw and the pre-embedded locknut 2 are locked together.

In summary, the pre-embedded locknut of the preferred embodiment of the present invention can prevent problems such as easy damage, easy loosening of screws, damage to plastic mechanism components, and easy loosening after locking. Specifically, most of the existing embedded nuts are circular, and even if there are regularly distributed tooth shapes around the periphery, the overall shape is still circular, so the existing embedded nuts will be stuck in the plastic hole when the force is too large. rotate. In contrast, the pre-embedded locknut of the embodiment of the present invention is provided with a radiation part, and through the special shape of the radiation part, the shape of the embedded locknut can provide a good stress environment, and it is not easy to be subjected to a large force. When the torque is high, it rotates with the locking piece to destroy the plastic mechanical parts. In this way, not only can the pre-embedded locknut be prevented from loosening from the plastic mechanical component, but also the good integrity of the plastic mechanical component can be maintained.

In addition, the shape of the pre-embedded locknut can also be easily grasped by a robotic arm, which is beneficial to the automation process.

Furthermore, the assembler can also process the radiation part more conveniently according to the actual situation in the later stage, which is convenient to use and compatible.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (6)

1. A pre-embedded anti-loosening nut embedded in a plastic mechanical component, characterized in that the pre-embedded anti-loosening nut comprises: a main body having a threaded hole; and a plurality of radiating portions arranged around the periphery of the main body, wherein each of the radiating portions has a connected first side and a second side, and the first side and the second side form a first inner angle, The second side is connected to the first side of another adjacent radiating part to form a second inner angle. 2. The pre-embedded locknut according to claim 1, characterized in that, the second side of the radiating part and the first side of the adjacent other radiating part are neither parallel nor parallel to each other. vertical. 3. The pre-embedded locknut according to claim 1, characterized in that, the first inner angle is an acute angle, and the second inner angle is an obtuse angle. 4. The pre-embedded locknut according to claim 1, wherein the height of each radiating portion is greater than or equal to the diameter of the threaded hole. 5 . The pre-embedded locknut according to claim 1 , wherein the plurality of radiating portions are arranged at equal intervals around the periphery of the main body portion. 6 . 6. The pre-embedded locknut according to claim 1, characterized in that, along the thickness direction of the main body, the threaded hole has a first opening on the top surface of the main body, and the threaded hole There is a second opening on the bottom surface of the main body, and the center of the first opening is eccentric to the center of the second opening.

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